198369394 has 4 divisors (see below), whose sum is σ = 297554094. Its totient is φ = 99184696.

The previous prime is 198369373. The next prime is 198369463. The reversal of 198369394 is 493963891.

198369394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 194965369 + 3404025 = 13963^2 + 1845^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49592347 + ... + 49592350.

Almost surely, 2^198369394 is an apocalyptic number.

198369394 is a deficient number, since it is larger than the sum of its proper divisors (99184700).

198369394 is an equidigital number, since it uses as much as digits as its factorization.

198369394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99184699.

The product of its digits is 1259712, while the sum is 52.

The square root of 198369394 is about 14084.3670074306. The cubic root of 198369394 is about 583.2099017934.

The spelling of 198369394 in words is "one hundred ninety-eight million, three hundred sixty-nine thousand, three hundred ninety-four".